With the explosion of (mostly Canon's) video HD dSLRs in the last few months, purchase decisions for video editors have shifted, depending on which editor can deal with h.264 the best way. Until recently, users had to either use "proxy" files, or transcode to an intermediate format. Then, Adobe's Premiere Pro CS5 came in to change this by being the first video editor to fully utilize nVidia's CUDA technology and achieve real-time playback for Quicktime dSLR, and AVCHD footage.